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city, county, and State of New York. have invented yhereinafterdescribed.

iniird guette *HENRY e. PEARsoN,

Letters Patent No. 98,103, dated December 2l, 1869.

0F NEW YORK, N. Y.

IMPROVEMENT IN ROLLERS'FOR FLUIING-'MACHINES The Schedule referred to inthese Letters Patent vand making part'. of the Dame To all cham 'it mayconcern:

Be it known thatI', HENRY G. PEARs0N,'of the certain Improvements inFluting-Rollers; and I doV hereby declare that the lbllowing, taken inconnection with the drawings which accom pany and form part oi thisspecification, is a description of my invention, suficient to enablethose skilled in the art to practise it.

My invention relates to a novelfmode of constructing flirting-rollers,adapted for machines which impart a tluted character to textilev orsimilar goods, under the action of heat and pressure; and

It consists in forming the roller of sheet-metal, or thin tubing, andcorrugating the same, and applying the same to the hollow mandrel, whichis to give the! revolution to the roller when` in the machine, all as Heretofore, the rollers of fluting-machines have been made of cast-metal,the ribs or teeth having been cast integral therewith and after beingcast, they require to be finished upon their exterior surface, atconsiderable cost and labor, in order to give a smoothness, which isnecessary to avoid cutting or injuring the fabrics to be operated upon,and which are sometimes of very delicate texture. It is also verydesirable that there should be no sharp edges or angles upon the teeth.This finishing or tiling away also wastes some of the material, (usuallybrass,) and to cast them, ref qnires that each roller should haveconsiderable thickness of material beneath its grooves, in order toinsure sufficient strength.`

Another mode of making such rollers, has been to cnt the longitudinalflutes, by appropriate machinery, in the surface of a cast tube. This isstill more expensive, and requires, also, much labor in smoothing andfinishing.

Figure 1, ofthe drawings, illustrates my invention, and shows, inperspective, the sheet-metal corrugated tube or sleeve applied to thehollow mandrel which supports and carries it.

Figure 2 is an end View of the sleeve itself, and

Figure 3, an end view of the mandrel as made when the sleeve is to beapplied, so as to be readily removed.

The sleeve A, I make of thin metal, preferably of brass, and corrugateit, to give it its flutes, either in sheets, in any well-known manner,and afterward bend it into tnbularfomi, and unite the edges; or, I takea tube of4 larger diameter than that of the finished roller, and firsttapering down'one end, so as to admit it-between the drawing-rollers,which are to impart to it its corrugations, it is then passed betweensuch rollers, emerging in 'the finished state; but the mode I deem thebest, is to force the tube through a drawplate, or a succession ofdraw-plates, in progressive series. smooth and true, and free from anyroughness or sharp edges, and needs no filing or finishing.

B is a hollow mandrel, made of appropriate size to receive and holdsnugly the sleeve A, which is to be free to be readily slidden on andoff at any time, and it has, at suitable' points'thereon, one or. moreprojections, C, each adapted to enter a groove of the sleeve or tube, toprevent the same from slipping during th revolution ofthe mandrel, andso that the two shallr revolve as if they were one.

D is an end-pieceor cap, atlixed to one end.of the mandrel B, itscentral opening serving as a means for securing the same to therevolving shaft of the machine; or the hollow mandrel may itself rest inbearings in the frame Of Ythev machine, and in such case, any pin vordetent within the tube would serve the purpose of the piece D, to limitthe position of the heating-iron. l

My compound rollers may be applied in iuting-machine, as usual.

AImlependentl-y of' the cheapness andl simplicity of my mode of makingthe rollers, they have also other .A

advantages, among which are the following: Finer or coarser-teethedrollers may be substituted at a moments notice, and with but slightexpense, one machine thus answering the place of many, by

merely changing the corrugated sleeve, and' disturbing no other portionofthe apparatus. The heat which may have been imparted to the mandrel isretained during this change, whilst to change the rollers ofthe usualconstruction, the substituted ones must `be heated entirely anew.

The mandrel may be made of thin tubing, and thus the heat required -isless, and is more easily imparted to the iiuted sleeve; and the hollowflutes ofA the sleeve form chambers, to receive the heat, (and they maybe closed at the ends, if desired.) 'lhe mandrel may also be perforatedin lines with the flutes, or otherwise, and thus allow the heat from theheating-iron to pass more quickly and directly to the outer sleeve,

In some cases, I ijll the open spaces between the flutes and the mandrelwith metal or composition.

The corrugated sleeve may be held to its mandrel by soldering,brazing,riveting, or in any way which will permanently hold them together, incases where itis not important to have it removable. l

I 'cla-im a roller for iiuting-machines, composed of -a tubularcorrugated sleeve, applied to the hollow snpporting-mandrel or shaft,substantially as set forth.

f" HENRY G. PEARSON.

, Witnesses:

J. F. BEALE, `JorntJ. HALsrED.

The whole exterior surface is thus made pairs in the

